Problem: If "Bob was playing cards with Adam and was way ahead. If Adam hadn't had a sudden run of good luck, he would have lost.", does it follow that "Bob would have lost."?

Answer: no


Problem: If "They broadcast an announcement, but a subway came into the station and I couldn't hear over it.", does it follow that "I couldn't hear the announcement."?

Answer: no


Problem: If "In the middle of the outdoor concert, the rain started falling, but it continued until 10.", does it follow that "The concert continued until 10."?

Answer: yes


Problem: If "Joe's uncle can still beat him at tennis, even though he is 30 years younger.", does it follow that "Joe's uncle is 30 years younger."?

Answer:
no